EP1382908A2 - Gas flow rate control device - Google Patents

Gas flow rate control device Download PDF

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Publication number
EP1382908A2
EP1382908A2 EP20030016213 EP03016213A EP1382908A2 EP 1382908 A2 EP1382908 A2 EP 1382908A2 EP 20030016213 EP20030016213 EP 20030016213 EP 03016213 A EP03016213 A EP 03016213A EP 1382908 A2 EP1382908 A2 EP 1382908A2
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EP
European Patent Office
Prior art keywords
gas
control device
valve
auxiliary chamber
gas flow
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP20030016213
Other languages
German (de)
French (fr)
Other versions
EP1382908A3 (en
EP1382908B1 (en
Inventor
Gerrit Jan Baarda
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Garrett Motion SARL
Original Assignee
Honeywell BV
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Filing date
Publication date
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Publication of EP1382908A2 publication Critical patent/EP1382908A2/en
Publication of EP1382908A3 publication Critical patent/EP1382908A3/en
Application granted granted Critical
Publication of EP1382908B1 publication Critical patent/EP1382908B1/en
Anticipated expiration legal-status Critical
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N1/00—Regulating fuel supply
    • F23N1/005—Regulating fuel supply using electrical or electromechanical means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2235/00—Valves, nozzles or pumps
    • F23N2235/12—Fuel valves
    • F23N2235/14—Fuel valves electromagnetically operated
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2235/00—Valves, nozzles or pumps
    • F23N2235/12—Fuel valves
    • F23N2235/18—Groups of two or more valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2235/00—Valves, nozzles or pumps
    • F23N2235/12—Fuel valves
    • F23N2235/20—Membrane valves
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/7722—Line condition change responsive valves
    • Y10T137/7781—With separate connected fluid reactor surface
    • Y10T137/7782—With manual or external control for line valve
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems
    • Y10T137/87917—Flow path with serial valves and/or closures

Definitions

  • the present invention relates to a Gas flow control device according to the preamble of Patent claim 1.
  • Control devices for gas burners are for the regulation of Gas supply to the gas burner provided and are between a gas supply source and the gas burner arranged.
  • various control devices for gas burners known and have, for example Main valve, a differential pressure generating device and an associated controller. It serves according to the state the technique of adjusting the regulator Gas outlet pressure to a setpoint.
  • a differential pressure created and set is after the state the technology between two channels a differential pressure created and set. Between the channels is a Valve arranged, the valve element with a Biasing device biased in the closing direction becomes. A generated differential pressure allows opening the valve against the biasing device, creating a Gas flow is enabled. By setting the Differential pressure between the first channel and the second Channel can also be set the gas outlet pressure.
  • the differential pressure For example, generated by a device over external lines with the respective pressure ranges of Gas flow control device are connected.
  • the gas flow control device has a Gas inlet and a gas outlet on a pressurized Housing in which an intermediate chamber through a membrane of the gas inlet is separated, wherein by a Differential pressure between the inlet and the auxiliary chamber a valve arrangement is operable to control a flow of to adjust the gas inlet to the gas outlet.
  • a servo pump in the Housing provided the differential pressure by pumping the Gas causes from the auxiliary chamber to the gas inlet.
  • the servo pump on a Dividing wall arranged, which is the auxiliary chamber of the channel of the Gas inlet separates.
  • the pump is within the Control device arranged at a position at the Areas of the regulatory device between which the Differential pressure is present, adjacent to each other.
  • the gas flow control device an overflow device on, which has a permanent fluid connection between the Auxiliary chamber and the channel of the inlet forms. It has the overflow device several functions. One thing becomes allows the pressure at the gas inlet in the auxiliary chamber is present, for example, if the power steering pump is not in Operation is. This can reduce the pressure on the back of the Membrane act and the valve element with an elevated Press force on the valve seat. On the other hand, the Overflow device during operation of the pump Throttle function, so that the pressure in the auxiliary chamber can be lowered. In addition, the wears Overflow device for the inherent safety of the system at, since the valve is closed in case of failure of the servo pump becomes.
  • the overflow from at least one opening is arranged on the partition, which is the auxiliary chamber of separates the channel of the gas inlet, and / or at least a channel which is provided on the servo pump.
  • a hole may be provided in the partition wall be.
  • the hole can also be provided on the membrane be.
  • the position of the hole or the overflow device is freely selectable, as long as a permanent fluid connection between the auxiliary chamber and the channel of the inlet is possible.
  • the overflow device can also be used as a Channel be formed in the servo pump. Does that exist? Valve arrangement of more than one valve, so there preferably the overflow device of a number of Openings or channels, the number of valves equivalent.
  • the valve assembly at least two functionally separate Valves on.
  • the valves are with respect to the flow arranged in a row. This is especially effective to the inherent security of the system and in particular the to increase passive valves. Should be an element of a Valve fail, the other valve can the flow of Lock gas with the servo pump switched off. If for example, a spring of a valve should fail, so the valve element can not automatically on the Valve seat are placed. It can also be more than two Be provided valves. In addition, parameters of Valve arrangement, such as the spring stiffness of the Springs, the effective areas of the membranes, so be set that an advantageous Responsiveness of the overall system can be obtained.
  • valve assembly closes the connection between the Gas inlet and the gas outlet when the differential pressure is less than a predetermined value. This will cause that only during operation of the servo pump causes a flow becomes.
  • flow pressure, flow rate
  • the flow adjusted by adjusting or regulating the servo pump become. Should the pump fail, it will close Valve assembly automatically, allowing the flow is locked.
  • a preferred embodiment of the invention presses the pressure in the auxiliary chamber at the valve element closed valve on the valve seat. So if the Pressure in the auxiliary chamber and with the servo pump switched off Also in the channel of the gas inlet increases, too the force with which the membrane the valve element on the Valve seat presses. Thus, according to the requirements a increased tightness at elevated pressure in the gas inlet be achieved.
  • a biasing device for closing the connection a valve element or the membrane provided.
  • the Biasing device for example, as a spring may be formed, an automatic closing of the Valve allows when the servo pump is turned off. It also adds to the security of the overall system elevated.
  • the Servo pump an electrically operated pump. This will causes only electrical connections in the Area of the partition between the auxiliary chamber and the Channel of the gas inlet must be provided. Furthermore An electric pump is easily adjustable.
  • Fig. 1 shows a first embodiment of Control device according to the invention for gas burners.
  • Fig. 2 shows a second embodiment of Control device according to the invention for gas burners.
  • Fig. 1 the control device is schematic shown.
  • the control device has a gas inlet 1 and a gas outlet 10.
  • a valve assembly consisting of a valve element 5, a biasing element 4 and a valve seat 6 arranged.
  • the biasing element 4 pressed in the pressureless state, the valve element 5 against the Valve seat 6 and locks the connection between the Gas inlet 1 and the gas outlet 10.
  • an auxiliary chamber 11 At the gas inlet 1 in Flow direction is provided an auxiliary chamber 11.
  • a Overflow device 3 is formed, via which the gas inlet 1 is always in communication with the auxiliary chamber 11.
  • the Overflow device 3 is in this embodiment as a hole in the partition wall between the auxiliary chamber and the Gas inlet formed.
  • the Auxiliary chamber 11 disposed on the channel extending from the Gas inlet 1 extends in the flow direction to the valve.
  • a membrane 9 is located between the channel, the extending from the gas inlet 1, and the auxiliary chamber 11.
  • the membrane 9 is arranged in the partition wall.
  • the valve element 5 is for closing a valve seat 6 aligned in its direction and on one side of the Diaphragm 9 is arranged, which is aligned with the valve seat is.
  • This valve seat 6 opens into the channel of the Gas outlet 10.
  • the spring 4 biases the membrane 9 and thus the valve element 5 in the pressureless state of the system the valve seat 6 and thus blocks the connection between the Gas inlet 1 and the gas outlet 10th
  • Servo pump 2 is provided in the pressure-carrying housing Servo pump 2 .
  • This power steering pump 2 is so arranged to be the fluid from the auxiliary chamber 11 to can promote the channel of the gas inlet 1.
  • the servo pump 2 is preferably an electrically operated pump.
  • the electric power is the servo pump 2 via electrical Lines fed, which are routed through one of the outer walls are.
  • the power steering pump 2 can thus be arranged on the dividing wall be that the power steering pump 2 penetrates the partition wall.
  • the power steering pump 2 may be located anywhere in the be arranged pressure-carrying housing, in which case inside the housing lines for connecting the Servo pump 2 with the auxiliary chamber 11 and with the channel of Gas inlet 1 must be provided.
  • the Pressure in the auxiliary chamber 11 with respect to the pressure in the Gas inlet 1 decreases, causing the differential pressure forms between the auxiliary chamber and the gas inlet.
  • the Throughput of the servo pump 2 is adjustable, can also the differential pressure between the channel of the gas inlet. 1 and the auxiliary chamber 11 can be adjusted. That is, the Differential pressure may take on a value at which the Valve element 6 against the biasing force of the spring 4 of the Valve seat 6 lifts off as soon as the amount of the sum of Compressive forces acting on the membrane 9, greater than the amount of spring force of the spring 4th
  • the pump is in the control device arranged.
  • the power steering pump is on the element arranged, the auxiliary chamber 11 and the channel of the Gas inlet 1 separates.
  • the electrically operated servo pump 2 is supplied via lines with electrical energy, passing through one of the walls of the control device are guided. There are thus no further gas lines required to the power steering pump 2 with the auxiliary chamber 11th and the channel of the gas inlet 1 to connect. This results increased safety, as a reduction of Connections, pipelines and the like, a Reduction of causes causes damage.
  • a partition wall is arranged, on which a servo pump 2 is arranged, which the fluid or the gas from the Feed the auxiliary chamber 11 into the channel of the gas inlet 1 can.
  • a valve assembly with a Valve element 5, a spring 4 and a valve seat. 6 intended.
  • the valve seat 6 does not open directly into the gas outlet 10, but is in conjunction with a second valve arrangement.
  • the spring 4 'of the second Valve arrangement is in a second auxiliary chamber 11 ' arranged and attached to one of its walls.
  • the second Auxiliary chamber 11 communicates with the first auxiliary chamber 11 an opening 12 in connection.
  • the opening 12 between the first auxiliary chamber 11 and the second auxiliary chamber 11 ' can be designed to be a predetermined Throttle effect has.
  • the response of the Valve arrangement to be matched.
  • the security the control device further increased because of failure of elements of one of the valve assemblies the second Valve assembly is able to shut off when Servo pump 2 the flow of gas sufficiently safe lock.
  • the overflow device 3 of the second Embodiment of at least two separate Openings will cause two of each other structurally separate valve systems are provided at which each have an opening for one of the valve systems is provided.
  • the second opening When clogging one of the openings of Overflow device 3 is still the second opening to Available and provides the function of the entire system with only a servo pump 2 safely.
  • the overflow device 3 provided on the power steering pump 2.
  • the servo pump. 2 arranged on the partition, which the auxiliary chamber 11 of the Gas inlet 1 separates.
  • the auxiliary chamber 11 is a Channel provided in the power steering pump 2, which is the auxiliary chamber 11 connects to the channel of the gas inlet 1.
  • the Overflow device 3 consists of more than one opening, These openings can all be in the servo pump 2 be provided. However, it is also possible to have several Provide openings on the power steering pump 2 and the partition.
  • a gas flow control device has a gas inlet 1, a gas outlet 10, an auxiliary chamber 11 with a Partition wall to the gas inlet 1 on.
  • a valve assembly 4 Through a Differential pressure between the inlet 1 and the Intermediate chamber 11 is a valve assembly 4, 5, 6; 4 ', 5', 6 'actuated via a diaphragm on the partition to a Flow from the gas inlet 1 to the gas outlet 10th adjust.
  • a servo pump 2 on the Partition provided, which measures the differential pressure by pumping of the gas from the intermediate chamber 11, 11 'to the gas inlet 1 causes.

Abstract

The gas flow regulator, for a gas burner, has a gas inflow (1) and outflow (10), and an auxiliary chamber (11) with a dividing wall to the inflow. A valve assembly (4-6) is operated by a membrane at the dividing wall through a pressure difference between the inflow and the chamber, to set the gas flow between the inflow and outflow. A servo pump (2) is at the dividing wall to act on the pressure difference by pumping gas from the chamber to the outflow. An overflow (3) gives a permanent fluid connection between the chamber and the inflow channel.

Description

Die vorliegende Erfindung betrifft eine Gasdurchflussregeleinrichtung gemäß dem Oberbegriff des Patentanspruchs 1.The present invention relates to a Gas flow control device according to the preamble of Patent claim 1.

Regeleinrichtungen für Gasbrenner sind zum Regeln der Gaszufuhr zu dem Gasbrenner vorgesehen und sind zwischen einer Gaszufuhrquelle und dem Gasbrenner angeordnet. Nach dem Stand der Technik sind verschiedene Regeleinrichtungen für Gasbrenner bekannt und weisen beispielsweise ein Hauptventil, eine Differenzdruckerzeugungseinrichtung und einen zugehörigen Regler auf. Dabei dient nach dem Stand der Technik der Regler der Einstellung eines Gasausgangsdrucks auf einen Sollwert.Control devices for gas burners are for the regulation of Gas supply to the gas burner provided and are between a gas supply source and the gas burner arranged. To In the prior art are various control devices for gas burners known and have, for example Main valve, a differential pressure generating device and an associated controller. It serves according to the state the technique of adjusting the regulator Gas outlet pressure to a setpoint.

Zur Einstellung eines Gasausgangsdrucks wird nach dem Stand der Technik zwischen zwei Kanälen ein Differenzdruck erzeugt und eingestellt. Zwischen den Kanälen ist ein Ventil angeordnet, dessen Ventilelement mit einer Vorspannvorrichtung in die Schliessrichtung vorgespannt wird. Ein erzeugter Differenzdruck ermöglicht das Öffnen des Ventils gegen die Vorspanneinrichtung, wodurch eine Gasströmung ermöglicht wird. Durch Einstellen des Differenzdrucks zwischen dem ersten Kanal und dem zweiten Kanal kann zudem der Gasausgangsdruck eingestellt werden. Dabei wird nach dem Stand der Technik der Differenzdruck beispielsweise durch eine Vorrichtung erzeugt, die über externe Leitungen mit den jeweiligen Druckbereichen der Gasdurchflussregeleinrichtung verbunden sind.To set a gas outlet pressure is after the state the technology between two channels a differential pressure created and set. Between the channels is a Valve arranged, the valve element with a Biasing device biased in the closing direction becomes. A generated differential pressure allows opening the valve against the biasing device, creating a Gas flow is enabled. By setting the Differential pressure between the first channel and the second Channel can also be set the gas outlet pressure. In this case, according to the prior art, the differential pressure For example, generated by a device over external lines with the respective pressure ranges of Gas flow control device are connected.

Es ist die Aufgabe der vorliegenden Erfindung, eine verbesserte Gasdurchflussregeleinrichtung zu schaffen. It is the object of the present invention to provide a to provide improved gas flow control device.

Die Aufgabe wird mittels einer Gasdurchflussregeleinrichtung mit den Merkmalen des Patentanspruchs 1 gelöst.The task is done by means of a Gas flow control device with the features of Patent claim 1 solved.

Erfindungsgemäß hat die Gasdurchflussregeleinrichtung einen Gaseinlass und einen Gasauslass an einem druckführenden Gehäuse, in dem eine Zwischenkammer durch eine Membran von dem Gaseinlass getrennt ist, wobei durch einen Differenzdruck zwischen dem Einlass und der Hilfskammer eine Ventilanordnung betätigbar ist, um eine Strömung von dem Gaseinlass zu dem Gasauslass einzustellen. Bei dieser Gasdurchflussregeleinrichtung ist eine Servopumpe in dem Gehäuse vorgesehen, die den Differenzdruck durch Pumpen des Gases von der Hilfskammer zu dem Gaseinlass bewirkt. Gemäß einer bevorzugten Ausgestaltung der Erfindung ist bei der Gasdurchflussregeleinrichtung die Servopumpe an einer Trennwand angeordnet, die die Hilfskammer von dem Kanal des Gaseinlasses trennt.According to the gas flow control device has a Gas inlet and a gas outlet on a pressurized Housing in which an intermediate chamber through a membrane of the gas inlet is separated, wherein by a Differential pressure between the inlet and the auxiliary chamber a valve arrangement is operable to control a flow of to adjust the gas inlet to the gas outlet. At this Gas flow control device is a servo pump in the Housing provided the differential pressure by pumping the Gas causes from the auxiliary chamber to the gas inlet. According to A preferred embodiment of the invention is in the Gas flow control device, the servo pump on a Dividing wall arranged, which is the auxiliary chamber of the channel of the Gas inlet separates.

Erfindungsgemäß ist also die Pumpe innerhalb der Regeleinrichtung an einer Position angeordnet, an der Bereiche der Regeleinrichtung, zwischen denen der Differenzdruck vorliegt, aneinander angrenzen. Somit ist es möglich, Rohrverbindungen und insbesondere Durchbrüche durch Wände der druckführenden Elemente der Regeleinrichtung zwischen der Servopumpe und den entsprechenden Bereichen zu vermeiden. Damit wird eine Regeleinrichtung mit gutem Ansprechverhalten und einer erhöhten inhärenten Sicherheit geschaffen, da weniger Bauteile vorgesehen sindAccording to the invention, therefore, the pump is within the Control device arranged at a position at the Areas of the regulatory device between which the Differential pressure is present, adjacent to each other. Thus it is possible, pipe connections and in particular breakthroughs through walls of the pressurized elements of the Control device between the servo pump and the appropriate areas to avoid. This will be a Control device with good response and a increased inherent security created because less Components are provided

Gemäß einer bevorzugten Ausgestaltung der Erfindung weist die Gasdurchflussregeleinrichtung eine Überströmvorrichtung auf, die eine permanente Fluidverbindung zwischen der Hilfskammer und dem Kanal des Einlasses bildet. Dabei hat die Überströmvorrichtung mehrere Funktionen. Zum einem wird ermöglicht, dass der Druck am Gaseinlass in der Hilfskammer vorliegt, wenn beispielsweise die Servopumpe nicht in Betrieb ist. Dadurch kann der Druck an der Rückseite der Membran wirken und das Ventilelement mit einer erhöhten Kraft auf den Ventilsitz pressen. Zum Anderen hat die Überströmvorrichtung beim Betrieb der Pumpe eine Drosselfunktion, so dass der Druck in der Hilfskammer gesenkt werden kann. Außerdem trägt die Überströmvorrichtung zur inhärenten Sicherheit des Systems bei, da beim Ausfall der Servopumpe das Ventil geschlossen wird.According to a preferred embodiment of the invention the gas flow control device an overflow device on, which has a permanent fluid connection between the Auxiliary chamber and the channel of the inlet forms. It has the overflow device several functions. One thing becomes allows the pressure at the gas inlet in the auxiliary chamber is present, for example, if the power steering pump is not in Operation is. This can reduce the pressure on the back of the Membrane act and the valve element with an elevated Press force on the valve seat. On the other hand, the Overflow device during operation of the pump Throttle function, so that the pressure in the auxiliary chamber can be lowered. In addition, the wears Overflow device for the inherent safety of the system at, since the valve is closed in case of failure of the servo pump becomes.

Gemäß einer bevorzugten Ausgestaltung der Erfindung besteht die Überströmvorrichtung aus zumindest einer Öffnung, die an der Trennwand angeordnet ist, die die Hilfskammer von dem Kanal des Gaseinlasses trennt, und/oder aus zumindest einem Kanal besteht, der an der Servopumpe vorgesehen ist. Beispielsweise kann ein Loch in der Trennwand vorgesehen sein. Das Loch kann jedoch auch an der Membran vorgesehen sein. Die Position des Lochs bzw. der Überströmvorrichtung ist frei wählbar, solange eine ständige Fluidverbindung zwischen der Hilfskammer und dem Kanal des Einlasses ermöglicht wird. Die Überströmvorrichtung kann auch als ein Kanal in der Servopumpe ausgebildet sein. Besteht die Ventilanordnung aus mehr als einem Ventil, so besteht vorzugsweise die Überströmvorrichtung aus einer Anzahl von Öffnungen bzw. Kanälen, die der Anzahl der Ventile entspricht.According to a preferred embodiment of the invention the overflow from at least one opening, the is arranged on the partition, which is the auxiliary chamber of separates the channel of the gas inlet, and / or at least a channel which is provided on the servo pump. For example, a hole may be provided in the partition wall be. However, the hole can also be provided on the membrane be. The position of the hole or the overflow device is freely selectable, as long as a permanent fluid connection between the auxiliary chamber and the channel of the inlet is possible. The overflow device can also be used as a Channel be formed in the servo pump. Does that exist? Valve arrangement of more than one valve, so there preferably the overflow device of a number of Openings or channels, the number of valves equivalent.

Gemäß einer bevorzugten Ausgestaltung der Erfindung weist die Ventilanordnung zumindest zwei funktionell getrennte Ventile auf. Dabei sind die Ventile bezüglich der Strömung in Reihe angeordnet. Das ist insbesondere wirksam, um die inhärente Sicherheit des Systems und insbesondere der passiven Ventile zu erhöhen. Sollte ein Element eines Ventils versagen, kann das andere Ventil die Strömung des Gases bei abgeschalteter Servopumpe sperren. Wenn beispielsweise eine Feder eines Ventils versagen sollte, so kann das Ventilelement nicht mehr selbsttätig auf den Ventilsitz aufgesetzt werden. Es können auch mehr als zwei Ventile vorgesehen sein. Außerdem können Parameter der Ventilanordnung, wie z.B. die Federsteifigkeiten der Federn, die effektiven Flächen der Membranen, so eingestellt werden, dass ein vorteilhaftes Ansprechverhalten des Gesamtsystems erhalten werden kann.According to a preferred embodiment of the invention the valve assembly at least two functionally separate Valves on. The valves are with respect to the flow arranged in a row. This is especially effective to the inherent security of the system and in particular the to increase passive valves. Should be an element of a Valve fail, the other valve can the flow of Lock gas with the servo pump switched off. If For example, a spring of a valve should fail, so the valve element can not automatically on the Valve seat are placed. It can also be more than two Be provided valves. In addition, parameters of Valve arrangement, such as the spring stiffness of the Springs, the effective areas of the membranes, so be set that an advantageous Responsiveness of the overall system can be obtained.

Gemäß einer bevorzugten Ausgestaltung der Erfindung schließt die Ventilanordnung die Verbindung zwischen dem Gaseinlass und dem Gasauslass, wenn der Differenzdruck kleiner als ein vorbestimmter Wert ist. Damit wird bewirkt, dass nur beim Betrieb der Servopumpe eine Strömung bewirkt wird. Außerdem kann die Strömung (Druck, Durchflussmenge) durch Einstellen bzw. Regeln der Servopumpe eingestellt werden. Sollte die Pumpe ausfallen, schließt sich die Ventilanordnung selbsttätig, so dass der Durchfluss gesperrt wird.According to a preferred embodiment of the invention the valve assembly closes the connection between the Gas inlet and the gas outlet when the differential pressure is less than a predetermined value. This will cause that only during operation of the servo pump causes a flow becomes. In addition, the flow (pressure, flow rate) adjusted by adjusting or regulating the servo pump become. Should the pump fail, it will close Valve assembly automatically, allowing the flow is locked.

Gemäß einer bevorzugten Ausgestaltung der Erfindung presst der Druck in der Hilfskammer das Ventilelement bei geschlossenem Ventil auf den Ventilsitz. Wenn also der Druck in der Hilfskammer und bei ausgeschalteter Servopumpe auch in dem Kanal des Gaseinlasses sich erhöht, steigt auch die Kraft an, mit der die Membran das Ventilelement auf den Ventilsitz presst. Damit kann anforderungsgemäß eine erhöhte Dichtigkeit bei erhöhten Druck im Gaseinlass erzielt werden.According to a preferred embodiment of the invention presses the pressure in the auxiliary chamber at the valve element closed valve on the valve seat. So if the Pressure in the auxiliary chamber and with the servo pump switched off Also in the channel of the gas inlet increases, too the force with which the membrane the valve element on the Valve seat presses. Thus, according to the requirements a increased tightness at elevated pressure in the gas inlet be achieved.

Gemäß einer bevorzugten Ausgestaltung der Erfindung ist eine Vorspannvorrichtung zum Schließen der Verbindung an einem Ventilelement bzw. der Membran vorgesehen. Mit der Vorspanneinrichtung, die beispielsweise als Feder ausgebildet sein kann, wird ein selbsttätiges Schließen des Ventils ermöglicht, wenn die Servopumpe ausgeschaltet ist. Außerdem wird dadurch die Sicherheit des Gesamtsystems erhöht.According to a preferred embodiment of the invention a biasing device for closing the connection a valve element or the membrane provided. With the Biasing device, for example, as a spring may be formed, an automatic closing of the Valve allows when the servo pump is turned off. It also adds to the security of the overall system elevated.

Gemäß einer bevorzugten Ausgestaltung der Erfindung ist die Servopumpe eine elektrisch betriebene Pumpe. Dadurch wird bewirkt, dass lediglich elektrische Verbindungen in den Bereich der Zwischenwand zwischen der Hilfskammer und dem Kanal des Gaseinlasses vorgesehen werden müssen. Außerdem ist eine elektrische Pumpe einfach regelbar.According to a preferred embodiment of the invention is the Servo pump an electrically operated pump. This will causes only electrical connections in the Area of the partition between the auxiliary chamber and the Channel of the gas inlet must be provided. Furthermore An electric pump is easily adjustable.

Die Erfindung wird nachstehend anhand von bevorzugten Ausführungsbeispielen in Verbindung mit den beigefügten Zeichnungen näher beschrieben.The invention will be described below with reference to preferred Embodiments in conjunction with the attached Drawings described in more detail.

Fig. 1 zeigt ein erstes Ausführungsbeispiel der erfindungsgemäßen Regeleinrichtung für Gasbrenner.Fig. 1 shows a first embodiment of Control device according to the invention for gas burners.

Fig. 2 zeigt ein zweites Ausführungsbeispiel der erfindungsgemäßen Regeleinrichtung für Gasbrenner.Fig. 2 shows a second embodiment of Control device according to the invention for gas burners.

Zunächst wird auf der Grundlage von Fig. 1 ein erstes Ausführungsbeispiel der erfindungsgemäßen Regeleinrichtung für Gasbrenner beschrieben.First, on the basis of Fig. 1, a first Embodiment of the control device according to the invention for gas burners described.

In der Fig. 1 ist die Regeleinrichtung schematisch dargestellt. Die Regeleinrichtung weist einen Gaseinlass 1 und einen Gasauslass 10 auf. In dem Durchgang zwischen dem Gaseinlass 1 und dem Gasauslass 10 ist eine Ventilanordnung bestehend aus einem Ventilelement 5, einem Vorspannelement 4 und einem Ventilsitz 6 angeordnet. Das Vorspannelement 4 presst im drucklosen Zustand das Ventilelement 5 gegen den Ventilsitz 6 und sperrt die Verbindung zwischen dem Gaseinlass 1 und dem Gasauslass 10. An dem Gaseinlass 1 in Strömungsrichtung ist eine Hilfskammer 11 vorgesehen. Zwischen der Hilfskammer 11 und dem Gaseinlass 1 ist eine Überströmvorrichtung 3 ausgebildet, über die der Gaseinlass 1 ständig in Verbindung mit der Hilfskammer 11 steht. Die Überströmvorrichtung 3 ist in diesem Ausführungsbeipiel als ein Loch in der Trennwand zwischen der Hilfskammer und dem Gaseinlass ausgebildet.In Fig. 1, the control device is schematic shown. The control device has a gas inlet 1 and a gas outlet 10. In the passage between the Gas inlet 1 and the gas outlet 10 is a valve assembly consisting of a valve element 5, a biasing element 4 and a valve seat 6 arranged. The biasing element 4 pressed in the pressureless state, the valve element 5 against the Valve seat 6 and locks the connection between the Gas inlet 1 and the gas outlet 10. At the gas inlet 1 in Flow direction is provided an auxiliary chamber 11. Between the auxiliary chamber 11 and the gas inlet 1 is a Overflow device 3 is formed, via which the gas inlet 1 is always in communication with the auxiliary chamber 11. The Overflow device 3 is in this embodiment as a hole in the partition wall between the auxiliary chamber and the Gas inlet formed.

Gemäß dem dargestellten Ausführungsbeispiel ist die Hilfskammer 11 an dem Kanal angeordnet, der sich von dem Gaseinlass 1 in Strömungsrichtung zu dem Ventil erstreckt. Insbesondere liegt eine Membran 9 zwischen dem Kanal, der sich von dem Gaseinlass 1 erstreckt, und der Hilfskammer 11. Dabei ist die Membran 9 in der Trennwand angeordnet.According to the illustrated embodiment, the Auxiliary chamber 11 disposed on the channel extending from the Gas inlet 1 extends in the flow direction to the valve. In particular, a membrane 9 is located between the channel, the extending from the gas inlet 1, and the auxiliary chamber 11. The membrane 9 is arranged in the partition wall.

Das Ventilelement 5 ist zum Verschließen eines Ventilsitzes 6 in dessen Richtung ausgerichtet und an einer Seite der Membran 9 angeordnet, die zu dem Ventilsitz ausgerichtet ist. Dieser Ventilsitz 6 mündet in den Kanal des Gasauslasses 10. Die Feder 4 spannt die Membran 9 und damit das Ventilelement 5 in drucklosem Zustand des Systems auf den Ventilsitz 6 und sperrt so die Verbindung zwischen dem Gaseinlass 1 und dem Gasauslass 10.The valve element 5 is for closing a valve seat 6 aligned in its direction and on one side of the Diaphragm 9 is arranged, which is aligned with the valve seat is. This valve seat 6 opens into the channel of the Gas outlet 10. The spring 4 biases the membrane 9 and thus the valve element 5 in the pressureless state of the system the valve seat 6 and thus blocks the connection between the Gas inlet 1 and the gas outlet 10th

Erfindungsgemäß ist in dem druckführenden Gehäuse eine Servopumpe 2 vorgesehen. Diese Servopumpe 2 ist so angeordnet, dass sie das Fluid von der Hilfskammer 11 zu dem Kanal des Gaseinlasses 1 fördern kann. Die Servopumpe 2 ist vorzugsweise eine elektrisch betriebene Pumpe. Die elektrische Leistung wird der Servopumpe 2 über elektrische Leitungen zugeführt, die durch eine der Außenwände verlegt sind. Die Servopumpe 2 kann so an der Trennwand angeordnet sein, dass die Servopumpe 2 die Trennwand durchdringt. According to the invention, in the pressure-carrying housing Servo pump 2 is provided. This power steering pump 2 is so arranged to be the fluid from the auxiliary chamber 11 to can promote the channel of the gas inlet 1. The servo pump 2 is preferably an electrically operated pump. The electric power is the servo pump 2 via electrical Lines fed, which are routed through one of the outer walls are. The power steering pump 2 can thus be arranged on the dividing wall be that the power steering pump 2 penetrates the partition wall.

Jedoch kann die Servopumpe 2 an einem beliebigen Ort in dem druckführenden Gehäuse angeordnet sein, wobei dann innerhalb des Gehäuses Leitungen zur Verbindung der Servopumpe 2 mit der Hilfskammer 11 sowie mit dem Kanal des Gaseinlasses 1 vorgesehen werden müssen.However, the power steering pump 2 may be located anywhere in the be arranged pressure-carrying housing, in which case inside the housing lines for connecting the Servo pump 2 with the auxiliary chamber 11 and with the channel of Gas inlet 1 must be provided.

Im Folgenden wird der Betrieb der erfindungsgemäßen Regelungseinrichtung beschrieben.In the following, the operation of the invention Control device described.

Im drucklosen Zustand wird der Ventilsitz ,5 des Ventils durch die Kraft der Feder 4 gegen den Ventilsitz 6 gepresst. Damit ist der Durchgang zwischen dem Gaseinlass 1 und dem Gasauslass 11 gesperrt. Wird an dem Gaseinlass 1 ein Druck aufgebracht, der höher als der Druck im Gasauslass 10 ist, so wird das Ventilelement 5 zusätzlich zu der Vorspannkraft der Feder 4 auch durch diejenige Kraft auf den Ventilsitz 6 gepresst, die sich durch den Druck in der Hilfskammer auf die Membran 9 ergibt. Wird die Servopumpe 2 betrieben, strömt Fluid bzw. Gas von der Hilfskammer in Richtung des Gaseinlasses 1 und durch die Überströmvorrichtung 3 zurück in die Hilfskammer 11. Durch die Drosselwirkung der Überströmvorrichtung 3 wird der Druck in der Hilfskammer 11 bezüglich des Drucks in dem Gaseinlass 1 vermindert, wodurch sich der Differenzdruck zwischen der Hilfskammer und dem Gaseinlass bildet. Da die Durchsatzmenge der Servopumpe 2 einstellbar ist, kann auch der Differenzdruck zwischen dem Kanal des Gaseinlasses 1 und der Hilfskammer 11 eingestellt werden. D.h., der Differenzdruck kann einen Wert annehmen, bei dem das Ventilelement 6 gegen die Vorspannkraft der Feder 4 von dem Ventilsitz 6 abhebt, sobald der Betrag der Summe der Druckkräfte, die an der Membran 9 wirken, größer ist als der Betrag der Federkraft der Feder 4. In the depressurized state, the valve seat, 5 of the valve by the force of the spring 4 against the valve seat. 6 pressed. This is the passage between the gas inlet 1 and the gas outlet 11 locked. Is at the gas inlet 1 applied a pressure higher than the pressure in the Gas outlet 10, so the valve element 5 is additional to the biasing force of the spring 4 by that force pressed on the valve seat 6, which is characterized by the pressure in the auxiliary chamber on the membrane 9 results. Will the Operated servo pump 2, flows fluid or gas from the Auxiliary chamber in the direction of the gas inlet 1 and through the Overflow 3 back into the auxiliary chamber 11. By the throttle effect of the overflow device 3 is the Pressure in the auxiliary chamber 11 with respect to the pressure in the Gas inlet 1 decreases, causing the differential pressure forms between the auxiliary chamber and the gas inlet. Because the Throughput of the servo pump 2 is adjustable, can also the differential pressure between the channel of the gas inlet. 1 and the auxiliary chamber 11 can be adjusted. That is, the Differential pressure may take on a value at which the Valve element 6 against the biasing force of the spring 4 of the Valve seat 6 lifts off as soon as the amount of the sum of Compressive forces acting on the membrane 9, greater than the amount of spring force of the spring 4th

Wenn das Ventilelement 5 von dem Ventilsitz 6 abhebt, wird der Durchgang zwischen dem Gaseinlass 1 und dem Gasauslass 11 freigegeben und kann das Gas von dem Gaseinlass 1 zu dem Gasauslass 10 strömen.When the valve element 5 lifts off from the valve seat 6, is the passage between the gas inlet 1 and the gas outlet 11 is released and the gas from the gas inlet 1 to the Gas outlet 10 flow.

Durch Einstellen der Durchsatzmenge der Servopumpe 2 wird die Durchsatzmenge durch die Regeleinrichtung zusätzlich in Abhängigkeit von den Drücken eingestellt, die an dem Gasauslass 10 und dem Gaseinlass 1 vorliegen.By adjusting the flow rate of the servo pump 2 becomes the flow rate through the control device in addition Depending on the pressures set on the Gas outlet 10 and the gas inlet 1 are present.

Wird die Servopumpe 2 abgeschaltet, presst die Feder 4 die Membran 9 und damit den Ventilkörper 5 in Richtung des Ventilsitzes 6, wodurch der Durchgang zwischen dem Gaseinlass 1 und dem Gasauslass 10 geschlossen wird.If the power steering pump 2 is turned off, the spring 4 presses the Membrane 9 and thus the valve body 5 in the direction of the Valve seat 6, whereby the passage between the Gas inlet 1 and the gas outlet 10 is closed.

Wenn die Servopumpe unbeabsichtigt abgeschaltet wird, ausfällt oder die Energiezufuhr fehlt, wird das Ventil geschlossen. Dadurch wird ein Fail-Safe-Betrieb sichergestellt, bei dem bei einer Fehlfunktion der Servopumpe 2 verhindert wird, das die Strömung des Gases bzw. des Fluids unbeabsichtigt fortgesetzt wird.When the servo pump is inadvertently switched off, fails or the power supply is missing, the valve closed. This will be a fail-safe operation ensured in case of malfunction of Power steering pump 2 prevents the flow of the gas or the fluid is inadvertently continued.

Erfindungsgemäß ist die Pumpe in der Regeleinrichtung angeordnet. Insbesondere ist die Servopumpe an dem Element angeordnet, das die Hilfskammer 11 und den Kanal des Gaseinlasses 1 trennt. Die elektrisch betriebene Servopumpe 2 wird über Leitungen mit elektrischer Energie versorgt, die durch eine der Wände der Regeleinrichtung hindurch geführt sind. Es sind somit keine weiteren Gasleitungen erforderlich, um die Servopumpe 2 mit der Hilfskammer 11 und dem Kanal des Gaseinlasses 1 zu verbinden. Damit ergibt sich eine erhöhte Sicherheit, da eine Verringerung von Anschlüssen, Rohrleitungen und dergleichen, eine Verringerung von Schadensursachen bewirkt. According to the invention, the pump is in the control device arranged. In particular, the power steering pump is on the element arranged, the auxiliary chamber 11 and the channel of the Gas inlet 1 separates. The electrically operated servo pump 2 is supplied via lines with electrical energy, passing through one of the walls of the control device are guided. There are thus no further gas lines required to the power steering pump 2 with the auxiliary chamber 11th and the channel of the gas inlet 1 to connect. This results increased safety, as a reduction of Connections, pipelines and the like, a Reduction of causes causes damage.

Im folgenden wird ein zweites Ausführungsbeispiel der Regeleinrichtung für Gasbrenner gemäß der vorliegenden Erfindung unter Bezugnahme auf Fig. 2 beschrieben. Der Aufbau der Regeleinrichtung gemäß Fig. 2 ist dem in Fig. 1 gezeigten ähnlich. An dieser Stelle werden nur die Unterschiede des zweiten Ausführungsbeispiels zu dem ersten Ausführungsbeispiel beschrieben.In the following, a second embodiment of Control device for gas burners according to the present Invention described with reference to FIG. 2. Of the Structure of the control device of FIG. 2 is the in Fig. 1st shown similar. At this point only the Differences of the second embodiment to the first Embodiment described.

Bei dem Aufbau des zweiten Ausführungsbeispiels ist ein Gaseinlass 1 mit einem Kanal, eine Hilfskammer 11 und ein Gasauslass 10 ebenfalls aneinander angrenzend angeordnet. Zwischen der Hilfskammer 11 und dem Kanal des Gaseinlasses 1 ist eine Trennwand angeordnet, an der eine Servopumpe 2 angeordnet ist, die das Fluid bzw. das Gas von der Hilfskammer 11 in den Kanal des Gaseinlasses 1 fördern kann. Außerdem ist eine Ventilanordnung mit einem Ventilelement 5, einer Feder 4 und einem Ventilsitz 6 vorgesehen. Der Ventilsitz 6 mündet jedoch nicht direkt in den Gasauslass 10, sondern ist in Verbindung mit einer zweiten Ventilanordnung. Die Feder 4' der zweiten Ventilanordnung ist in einer zweiten Hilfskammer 11' angeordnet und an einer ihrer Wände angebracht. Die zweite Hilfskammer 11' steht mit der ersten Hilfskammer 11 über eine Öffnung 12 in Verbindung. Die Öffnung 12 zwischen der ersten Hilfskammer 11 und der zweiten Hilfskammer 11' kann so ausgelegt sein, dass sie eine vorbestimmte Drosselwirkung hat. Damit kann das Ansprechverhalten der Ventilanordnung abgestimmt werden.In the structure of the second embodiment is a Gas inlet 1 with a channel, an auxiliary chamber 11 and a Gas outlet 10 also disposed adjacent to each other. Between the auxiliary chamber 11 and the channel of the gas inlet 1, a partition wall is arranged, on which a servo pump 2 is arranged, which the fluid or the gas from the Feed the auxiliary chamber 11 into the channel of the gas inlet 1 can. In addition, a valve assembly with a Valve element 5, a spring 4 and a valve seat. 6 intended. However, the valve seat 6 does not open directly into the gas outlet 10, but is in conjunction with a second valve arrangement. The spring 4 'of the second Valve arrangement is in a second auxiliary chamber 11 ' arranged and attached to one of its walls. The second Auxiliary chamber 11 'communicates with the first auxiliary chamber 11 an opening 12 in connection. The opening 12 between the first auxiliary chamber 11 and the second auxiliary chamber 11 'can be designed to be a predetermined Throttle effect has. Thus, the response of the Valve arrangement to be matched.

Wenn die Servopumpe 2 betrieben wird, so dass der Differenzdruck zwischen den Hilfskammern 11 und 11' sowie dem Kanal des Einlasses 1 ausreicht, um das erste Ventilelement 5 von dem ersten Ventilsitz 6 sowie das zweite Ventilelement 5' von dem zweiten Ventilsitz 6' abzuheben, wird die Strömung des Gases von dem Gaseinlass 1 über den ersten Ventilsitz 6 und den zweiten Ventilsitz 6' zu dem Gasauslass ermöglicht.When the servo pump 2 is operated, so that the Differential pressure between the auxiliary chambers 11 and 11 'and the channel of the inlet 1 is sufficient to the first Valve element 5 of the first valve seat 6 and the second valve element 5 'from the second valve seat 6' lift off, the flow of the gas from the gas inlet 1 via the first valve seat 6 and the second valve seat 6 ' allows for the gas outlet.

Gemäß dem zweiten Ausführungsbeispiel wird die Sicherheit der Regeleinrichtung weitergehend erhöht, da bei Versagen von Elementen von einer der Ventilanordnungen die zweite Ventilanordnung in der Lage ist, bei abgeschalteter Servopumpe 2 den Durchfluss des Gases hinreichend sicher zu sperren.According to the second embodiment, the security the control device further increased because of failure of elements of one of the valve assemblies the second Valve assembly is able to shut off when Servo pump 2 the flow of gas sufficiently safe lock.

Vorzugsweise besteht die Überströmvorrichtung 3 des zweiten Ausführungsbeispiels aus zumindest zwei getrennten Öffnungen. Damit wird bewirkt, dass zwei voneinander strukturell getrennte Ventilsysteme vorgesehen sind, bei denen jeweils eine Öffnung für eines der Ventilsysteme vorgesehen ist. Bei Verstopfen einer der Öffnungen der Überströmvorrichtung 3 steht noch die zweite Öffnung zur Verfügung und stellt die Funktion des Gesamtsystems mit nur einer Servopumpe 2 sicher.Preferably, the overflow device 3 of the second Embodiment of at least two separate Openings. This will cause two of each other structurally separate valve systems are provided at which each have an opening for one of the valve systems is provided. When clogging one of the openings of Overflow device 3 is still the second opening to Available and provides the function of the entire system with only a servo pump 2 safely.

Außerdem kann das Ansprechverhalten der gesamten Regeleinrichtung mit zwei Ventilanordnungen durch Einstellen von Parametern, wie z.B. Federsteifigkeit, Ventilelementdurchmesser und -masse, effektive Membranfläche u.a., beeinflusst werden.In addition, the response of the entire Control device with two valve arrangements by Setting parameters, e.g. Spring stiffness, Valve element diameter and mass, effective Membrane surface u.a., Be affected.

Gemäß einer abgewandelten Ausführungsform der Erfindung, die im wesentlichen dem ersten und dem zweiten Ausführungsbeipiel entspricht, ist die Überströmvorrichtung 3 an der Servopumpe 2 vorgesehen. Wie bei dem ersten und dem zweiten Ausführungsbeispiel ist dabei die Servopumpe 2 an der Trennwand angeordnet, die die Hilfskammer 11 von dem Gaseinlass 1 trennt. Gemäß dieser Ausführungsform ist ein Kanal in der Servopumpe 2 vorgesehen, die die Hilfskammer 11 mit dem Kanal des Gaseinlasses 1 verbindet. Wenn die Überströmvorrichtung 3 aus mehr als einer Öffnung besteht, können diese Öffnungen allesamt in der Servopumpe 2 vorgesehen sein. Es ist jedoch auch möglich, mehrere Öffnungen an der Servopumpe 2 und der Trennwand vorzusehen. Eine Gasdurchflussregeleinrichtung weist einen Gaseinlass 1, einen Gasauslass 10, eine Hilfskammer 11 mit einer Trennwand zu dem Gaseinlass 1 auf. Durch einen Differenzdruck zwischen dem Einlass 1 und der Zwischenkammer 11 ist eine Ventilanordnung 4, 5, 6; 4', 5', 6' über eine Membran an der Trennwand betätigbar, um eine Strömung von dem Gaseinlass 1 zu dem Gasauslass 10 einzustellen. Erfindungsgemäß ist eine Servopumpe 2 an der Trennwand vorgesehen, die den Differenzdruck durch Pumpen des Gases von der Zwischenkammer 11, 11' zu dem Gaseinlass 1 bewirkt.According to a modified embodiment of the invention, essentially the first and the second Ausführungsbeipiel corresponds, is the overflow device 3 provided on the power steering pump 2. As with the first and the second embodiment is the servo pump. 2 arranged on the partition, which the auxiliary chamber 11 of the Gas inlet 1 separates. According to this embodiment is a Channel provided in the power steering pump 2, which is the auxiliary chamber 11 connects to the channel of the gas inlet 1. If the Overflow device 3 consists of more than one opening, These openings can all be in the servo pump 2 be provided. However, it is also possible to have several Provide openings on the power steering pump 2 and the partition. A gas flow control device has a gas inlet 1, a gas outlet 10, an auxiliary chamber 11 with a Partition wall to the gas inlet 1 on. Through a Differential pressure between the inlet 1 and the Intermediate chamber 11 is a valve assembly 4, 5, 6; 4 ', 5', 6 'actuated via a diaphragm on the partition to a Flow from the gas inlet 1 to the gas outlet 10th adjust. According to the invention, a servo pump 2 on the Partition provided, which measures the differential pressure by pumping of the gas from the intermediate chamber 11, 11 'to the gas inlet 1 causes.

Claims (11)

Gasdurchflussregeleinrichtung mit einem Gaseinlass (1) und einem Gasauslass (10) an einem druckführenden Gehäuse (G), in dem eine Hilfskammer (11, 11') durch eine Trennwand von dem Gaseinlass (1) getrennt ist, wobei durch einen Differenzdruck zwischen dem Einlass (1) und der Hilfskammer (11) eine Ventilanordnung (4, 5, 6; 4', 5', 6') betätigbar ist, um eine Strömung von dem Gaseinlass (1) zu dem Gasauslass (10) einzustellen,
dadurch gekennzeichnet, dass
eine Servopumpe (2) in dem Gehäuse vorgesehen ist, die den Differenzdruck durch Pumpen des Gases von der Hilfskammer (11, 11') zu dem Gaseinlass (1) bewirkt.Gas flow control device comprising a gas inlet (1) and a gas outlet (10) on a pressurized housing (G), in which an auxiliary chamber (11, 11 ') is separated from the gas inlet (1) by a partition, wherein a differential pressure between the inlet (1) and the auxiliary chamber (11) a valve arrangement (4, 5, 6, 4 ', 5', 6 ') is actuated to adjust a flow from the gas inlet (1) to the gas outlet (10),
characterized in that
a servo pump (2) is provided in the housing which effects the differential pressure by pumping the gas from the auxiliary chamber (11, 11 ') to the gas inlet (1). Gasdurchflussregeleinrichtung gemäß Patentanspruch 1,
dadurch gekennzeichnet, dass
die Servopumpe (2) an der Trennwand angeordnet ist. Gas flow control device according to claim 1,
characterized in that
the servo pump (2) is arranged on the dividing wall. Gasdurchflussregeleinrichtung gemäß Patentanspruch 1 oder 2,
dadurch gekennzeichnet, dass
eine Überströmvorrichtung (3) vorgesehen ist, die eine permanente Fluidverbindung zwischen der Hilfskammer (11) und dem Kanal des Einlasses (1) bildet.Gas flow control device according to claim 1 or 2,
characterized in that
an overflow device (3) is provided, which forms a permanent fluid connection between the auxiliary chamber (11) and the channel of the inlet (1). Gasdurchflussregeleinrichtung gemäß Patentanspruch 3,
dadurch gekennzeichnet, dass
die Überströmvorrichtung (3) aus zumindest einer Öffnung, die an der Trennwand angeordnet ist, und/oder aus zumindest einem Kanal besteht, der an der Servopumpe (2) vorgesehen ist.Gas flow control device according to claim 3,
characterized in that
the overflow device (3) consists of at least one opening which is arranged on the dividing wall and / or of at least one channel which is provided on the servo pump (2). Gasdurchflussregeleinrichtung gemäß einem der Patentansprüche 1 - 4,
dadurch gekennzeichnet, dass
das Ventilelement (5, 5') durch eine Membran (9) im Ansprechen auf den Differenzdruck zwischen dem Gaseinlass (1) und der Hilfskammer (11, 11') betätigbar ist.Gas flow control device according to one of the claims 1 - 4,
characterized in that
the valve member (5, 5 ') is operable through a diaphragm (9) in response to the differential pressure between the gas inlet (1) and the auxiliary chamber (11, 11'). Gasdurchflussregeleinrichtung gemäß einem der Patentansprüche 1 - 5,
dadurch gekennzeichnet, dass
die Ventilanordnung (4, 5, 6; 4', 5', 6') zumindest zwei funktionell getrennte Ventile aufweist, die in Reihe bezüglich der Strömung des Gases angeordnet sindGas flow control device according to one of the claims 1 - 5,
characterized in that
the valve assembly (4, 5, 6; 4 ', 5', 6 ') comprises at least two functionally separate valves arranged in series with respect to the flow of the gas Gasdurchflussregeleinrichtung gemäß Patentanspruch 6,
dadurch gekennzeichnet, dass
jedes Ventil der Ventilanordnung (4, 5, 6; 4', 5', 6') an einer Hilfskammer (11; 11') angeordnet ist und die Hilfskammern über eine Öffnung (12) in Fluidverbindung stehen. Gas flow control device according to claim 6,
characterized in that
each valve of the valve assembly (4, 5, 6; 4 ', 5', 6 ') is disposed on an auxiliary chamber (11, 11') and the auxiliary chambers are in fluid communication via an orifice (12). Gasdurchflussregeleinrichtung gemäß einem der Patentansprüche 1 - 7,
dadurch gekennzeichnet, dass
die Ventilanordnung (4, 5, 6; 4', 5', 6') die Verbindung zwischen dem Gaseinlass (1) und dem Gasauslass (10) schließt, wenn der Differenzdruck kleiner als ein vorbestimmter Wert ist.Gas flow control device according to one of the claims 1 - 7,
characterized in that
the valve assembly (4, 5, 6; 4 ', 5', 6 ') closes the connection between the gas inlet (1) and the gas outlet (10) when the differential pressure is less than a predetermined value. Gasdurchflussregeleinrichtung gemäß einem der Patentansprüche 1 - 8,
dadurch gekennzeichnet, dass
der Druck in der Hilfskammer (11, 11') das Ventilelement (5, 5') bei geschlossenem Ventil auf den Ventilsitz (6, 6') presst.Gas flow control device according to one of the claims 1 - 8,
characterized in that
the pressure in the auxiliary chamber (11, 11 ') presses the valve element (5, 5') onto the valve seat (6, 6 ') when the valve is closed. Gasdurchflussregeleinrichtung gemäß einem der Patentansprüche 1 - 9,
dadurch gekennzeichnet, dass
eine Vorspannvorrichtung (4, 4') zum Schließen der Verbindung an dem Ventilelement (5, 5') vorgesehen ist.Gas flow control device according to one of the claims 1 - 9,
characterized in that
a biasing device (4, 4 ') for closing the connection to the valve element (5, 5') is provided. Gasdurchflussregeleinrichtung gemäß einem der Patentansprüche 1 - 10,
dadurch gekennzeichnet, dass
die Servopumpe (2) eine elektrisch betriebene Pumpe ist.Gas flow control device according to one of the claims 1 - 10,
characterized in that
the servo pump (2) is an electrically operated pump.
EP20030016213 2002-07-18 2003-07-17 Gas flow rate control device Expired - Lifetime EP1382908B1 (en)

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Publication number Priority date Publication date Assignee Title
CH413565A (en) * 1963-11-18 1966-05-15 Buehler Ag Geb Pneumatic dedusting system
US3556464A (en) * 1969-06-09 1971-01-19 Griswold Controls Self-draining pressure actuated valve
FR2460436A1 (en) * 1979-06-29 1981-01-23 Sueddeutsche Kuehler Behr Simple fast long-life electromagnetic water valve - is for air-conditioning in vehicle and exhibits little pressure loss and no knocking
US6105607A (en) * 1998-06-15 2000-08-22 Caise; Robert F. Microprocessor controled water shut-off device

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US20040065369A1 (en) 2004-04-08
EP1382908A3 (en) 2005-04-13
EP1382908B1 (en) 2010-09-29
DE10232654B3 (en) 2004-03-11
ATE483140T1 (en) 2010-10-15
US6978798B2 (en) 2005-12-27
DE50313122D1 (en) 2010-11-11

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